Hi Sukrati. First of all congratulations for your admission. I think you should prefer jiit noida 62 for ece. 

It is a highly reputed college and being located in Noida it provides you with a better exposure as well as better opportunities. 

Also for what I feel is that ece as a branch is better than chemical engineering. 

Also if you want to prepare for higher studies then jiit would be a better option as you can easily get good coaching in DELHI. 

Last but nit the least what I would suggest is that choose the branch as per your interest. Because it is very much necessary that one should be passionate about what they are doing in life. 

Hope it helps. 

All the best for your admission.